Cooling plates for blast furnaces and cooling installation employing this type of plate

A cooling installation for a blast furnace comprising:

• cooling plates, said cooling plates being arranged between an inner wall of a casing and a refractory lining in successive rings superimposed along the inner wall of a casing of the blast furnace and having inner tubes in which a a cooling fluid circulates therethrough, inlets and outlets of said inner tubes being located at various levels, the inner tubes of two adjacent plates in a vertical plane being connected to one another in order to create a network of substantially vertical circulation lines for the fluid, connected to an outer circuit, said inner tubes emerging at a face of the cooling plates and passing through the casing, each cooling plate having the form of a "C" whose arms define two continuous horizontal lips between which is inserted a lining element of refractory material, at least one of the lips comprising an undercut for blocking the lining element of refractory material.